Product comparison · 2 internal hard drives

Samsung 320GB SATA II HDD vs Samsung 320GB Ultra-ATA/133 HDD

Key differences

Interface
- 320GB SATA II HDD:Serial ATA II
- 320GB Ultra-ATA/133 HDD:Ultra-ATA/133
Power consumption (typical)
- 320GB SATA II HDD:10 W
- 320GB Ultra-ATA/133 HDD:8 W
Power consumption (standby)
- 320GB SATA II HDD:1.3 W
- 320GB Ultra-ATA/133 HDD:0.45 W

Differences highlightedShow differences only

Comparison of 320GB SATA II HDD, 320GB Ultra-ATA/133 HDD
31 specifications	A Samsung 320GB SATA II HDD View product	B Samsung 320GB Ultra-ATA/133 HDD View product
Features1 differ
HDD capacity	320 GB	320 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	Serial ATA II	Ultra-ATA/133
Storage drive buffer size	8 MB	8 MB
Full stroke seek time	18 ms	18 ms
Track to track seek time	0.8 ms	0.8 ms
Average seek time	8.9 ms	8.9 ms
Average latency	4.17 ms	4.17 ms
Bytes per sector	512	512
Mean time between failures (MTBF)	600000 h	600000 h
Start/stop cyclesKnown for one	Unknown — not stated by the source	50000
Power2 differ
Power consumption (typical)Differs	10 W	8 W
Power consumption (standby)Differs	1.3 W	0.45 W
Operating voltage	5 / 12 V	5 / 12 V
Operational conditionsidentical
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)	5 - 90%	5 - 90%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating altitude	0 - 3000 m	0 - 3000 m
Non-operating altitude	0 - 12000 m	0 - 12000 m
Operating shock	63 G	63 G
Non-operating shock	300 G	300 G
Weight & dimensionsidentical
Width	147 mm	147 mm
Depth	101.6 mm	101.6 mm
Height	26.1 mm	26.1 mm
Weight	651 g	651 g
Other featuresidentical
Power requirementsKnown for one	+5V±5%; +12V±10%	Unknown — not stated by the source
Drive ready time	10 s	10 s
Internal	Yes	Yes
Acoustic pressure emissionsKnown for one	2.8 dB	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.